Suction-roll for pulp or paper mills



(No Model.)

H. -NIESAN SUUTION ROLL POB. PULP 0R PAPER MILLS.

No. 516,507. Patented Mar". 13, 1894.

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UNITED STATES PATENT OFFICE.

HUBERT NIESAN, OF KAUKAUNA, WISCONSIN.

SUCTION-ROLL FOR PULP OR PAPER MILLS.

SPECIFICATION forming part of Letters Patent No. 516,507, dated March13, 1894.

Application filed May 24, 1888.

bination of parts to be hereinafter described' with reference totheaccompanying drawings and subsequently claimed.

In the drawings: Figure l represents a vertical longitudinal section ofa suction-roll constructed according to my invention; Figs.

2 and 3 vertical transverse sections respectively taken on lines 2-2 and3-3 Fig. 1; Fig. 4 a vertical longitudinal section of another form of mysuction-roll; Figs. 5 and 6 vertical transverse sections respectivelytaken on lines 5-5 and 6 6 Fig. 4, and Fig. 7 a portion of what istermed a Wet machine with my suction-roll in position for use.

Referring by letter to the drawings A represents a stationary plateprovided with an annular iiange A and a squared projection B the latterbeing designed to fit a corresponding socket in an arm O that is securedto the pulp tank D best illustrated in Fig. 7. The plate A is preferablymade in two sections, and these sections have opposing ears E that areclamped together by means of bolts F, as illustrated in Figs. 2 and 5.Turningloosely in the projection B on the plate A is a shaft G and faston this shaft is the headed end H of a cylinder H the other end of thelatter being fitted inside of the flange A on said plate so as to form ajoint that is practically air tight, but still is free to turn. In Fig.l, I show the flange A of the plate asprovided with a shoulder againstwhich comes the opposing end of the cylinder H, while in Fig. 4, I showsaid iange turned over a rib on said end of the cylinder, but I do notconfine myself to the constructions shown, as various other means maybeemployed to accomplish the same result. The cylinder H is foraminousthroughout its length and is provided with a series of chambers I.

In one form of my suction-roll, as ,shown by Figs. 1, 2, and 3, thechambers I in the cylinderH are formed by a polygonal shell K havinginwardly curved sides the meeting points Serial No. 274,955. (No model.)

ofwhich come Hush with the inner side of said cylinder. Inthis form ofthe suction-roll one end of the shell is secured to the headed end ofthe cylinder and the other end supported by a spider J that is fast onthe shaft G.

In the form of suction-roll shown in Figs. 4. 5 and 6, the shell K iscylindrical and radiating therefrom at suitable intervals apart are aseries of plates Lwhose outer ends come flush against said cylinder.

As shown in Figs. l and 2, I provide the flange A of the stationaryplate A with an exhaust-pipe M, and in Figs. 4 and 5, I show a similarpipe let into said plate near its circumference.

In the operation of myinvention, the usual felt or wire-cloth apron N,that takes the pulp from the roller O in the tank D, passes over theforaminous cylinder H, and as the latter is revolved, the chambers Isuccessively come into communication with the exhaust pipe M, and thus asuction is created that draws the mois-ture from the stock, thismoisture being carried off through said exhaust-pipe to a suitable pointof discharge.

While I have shown and described one end of the foraminous cylinder asbeing closed it is obvious that a construction similar to that at theopposite end may be substituted' thus enabling me to draw from both endsof said cylinder.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

A suction-roll for pulp and paper mills, that comprises a stationaryplate provided with an annular flange, a foraminous cylinder having anopen end fitted inside of said iiange, a shell arranged within thecylinder and forming therewith a series of continuous longitudinalchambers, a shaft rigidly connected to the cylinder and shell in linewith the axis thereof, and an exhaust pipe connected to said plate to besuccessively passed by the chambers, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, latOentralia, in the county of Wood and State of Wisconsin, in the presenceof two witnesses.

HUBERT NIEsAN. j

IOO

